Broadband Evolution and Fixed Mobile Convergence · 2019. 11. 13. · WT-459 - DISAGGREGATED BNG...

© 2019 Juniper Networks Juniper Confidential

November 12, 2019

Broadband Evolution and Fixed Mobile Convergence

Paul Lachapelle, Director PLM


AGENDA

Broadband Market Inflections and Evolution

BNG Disaggregation and Convergence Standards Update

BNG Disaggregation via CUPS Overview

Fixed Mobile Convergence


SP TRANSFORMATION AND NETWORK CONVERGENCE

Wireline

Telco-CloudConvergence

Mobile

Telco-Cloud

CLOUD

MOBILEWIRELINE

TransformativeFast fail / TTMFlexibility and elasticity

Mobility and portabilityUbiquitous connectivityHigh scale, low latency

High bandwidthHigh performanceLow power

Private Telco


BROADBAND MARKET INFLECTIONS AND EVOLUTION

4

Integrated

BNGEdge

CloudFMC

CUPSFWA

TODAY

Video leading way

to 1Gbps+ to the

home

More Bandwidth

Smart Homes,

Connected “X”

IOT, M2M

More Devices

5G Mobile, Satellite,

WiFi, Cable, FWA,

G.FAST

Network

Evolution

Cloud/NFV,

Mobile/FWA,

Disagg/CUPS

New

Architectures

TOMORROW

Vertically integrated BNG solutions for

wireline BB

Shifting Architectures

DistributionDisaggregationConvergence

Google Stadia Game Streaming Service 35Mbps / user unicast, plans for 8K video


ARCHITECTURAL SHIFT TO DISTRIBUTE THE EDGE

• Deliver IP services closer to the user

• High performance

• Low latency

• Local caching and content to reduce transit costs

• Smaller failure domain

• Scale-out economics

• Platform optimization (capacity, scale, redundancy, density, cost)

• JIT Inventory / PAYG

• Precision investments

• Possible direct connect (no agg layer)

• Simplified architecture

• Lower TCO

BNG

CENTRALOFFICE

METRO POINT OFPRESENCE

BNG

CENTRALIZED

DISTRIBUTED


NEXT-GENERATION CO EDGE CLOUDRE-DESIGN OF EDGE SITES FOR UNIVERSAL EDGE CLOUD

Existing CO / POP Location

WAN

BNG, PE, AGG

OLT

Centralized DC

Aggregation& Edge get

disaggregated, fabric based

Cloud extends to the edge Edge

Services

3PPApplications

VNFs / CNFsMGMT & CTRL

VNFs / CNFs

Access Leaf

PNFs

WAN

CO - IP Fabric

Distributed Edge Cloud

VPC

CO Re-Design VPC

Next Gen CO / POP Location

UniversalEdge Cloud


ARCHITECTURAL CHOICES FOR THE RESIDENTIAL EDGE USE CASE

7

Distributed/Physical

• Compact, fixed form factor (1-2 RU) BNG platforms (integrated)

• Distributes broadband edge closer to subscriber and/or collocated with video cache / peering router

• Limits ‘blast radius’ in event of an outage

Distributed/Virtualized

• Same benefits as distributed/physical

• Disaggregates HW (x86) from SW leveraging software-defined scale out

• May be more difficult operationally due to number of instances to be managed

Centralized/Virtualized

• Similar benefits/challenges as centralized – minus large-scale router platforms

• Extra requirement of integration across HW/SW

• TCO challenged at scale due to high BW/subscriber demand for BNG use case

New flexible architectural approach needed to realize most benefits with fewest trade-offs

Centralized/Physical

• Traditional BRAS/BNG architecture

• Simplified operations (fewer ‘nodes’)

• Requires large-scale (expensive) IP edge router platforms

• Adds extra backhaul and latency ‘tax’ in aggregation network

DISTRIBUTED

PHYSICAL

VIRTUALIZED

CENTRALIZED BNG


STANDARDS IN PLAY – BNG CUPS & CONVERGENCE

8

AGF ATSSS


WIRELESS WIRELINE CONVERGENCE ROADMAP

9

2017 2018 2019 2020 2021

Release 15 – 5G Phase 1

Release 16 – 5G Phase 2

Release 17

Joint BBF/3GPP Workshop

WWC Study

AGF, RG Specs

BNG CUPS Specs

WWC Studies WWC Specs

Functional Freeze

WWC2.0 TBD


BROADBAND FORUM (BBF)WT-459 - DISAGGREGATED BNG UPDATE

Control and User Plane Separation for a Disaggregated BNG

Sponsors of Project Stream:

• Juniper, Nokia, DT, Vodafone, Ericsson

WT-459 Scope:

• Use cases, deployments & business drivers for BNG CUPS

• Functional requirements and reference architecture

• Specify interface(s) between BNG control plane and user plane

• Control plane and user plane resiliency

• Specify protocol for control plane and user plane separation for defined interfaces

• Define information model exchanged between control plane and user plane interfaces

• Subscriber Management, Policy Mgt, Accounting

• Management architecture / interfaces

Target completion date: 1H 2020

10


BNG CUPS BBF REFERENCE ARCHITECTURE

11

PFCP – Packet Forwarding Control Protocol

Simple extensions to PFCP for BNG CUPS

Standardized in 3GPP for EPC and 5GC

• Forwarding state for subscriber sessions

• QOS enforcement for subscriber sessions

• Usage tracking and reporting (credit-control)

• Stats reporting

• CP to UP heartbeat for liveness detection


BNG CONTROL AND USER PLANE SEPARATION (CUPS) OVERVIEW

12

A cloud deployed management function that controls and monitors multiple BNG UPs

• Cloud deployed control and management plane (1 CP: Nx UPs)

• Centralized redundant, cloud deployed subscriber database

• Standards CP-to-UP protocol and management information model – PFCP extensions

• Single CP interface into BSS/OSS

BNG Control Plane

Physical and/or virtual

User Planes

Management & control Interface

PFCP - Sx/N4

AAA PCRF DHCP

Subs. session mgmt

Auth & Accounting

IP address mgmt

Policy decisions

Lawful intercept-CP

Client protocols

Local CP

Unicast / Mcast Routing

Traffic mgmt

Multicast replication

Lawful intercept - UP

Protocol keepalives

SDB


User Planes

BENEFITS OF BNG DISAGGREGATION / CUPS

13

Control Plane

Physical Virtualized

• Independent CP/UP scaling

• Simplifies control plane scale-out and failure recovery through cloud-native deployment

• Operational efficiencies via centralized management and control (1 CP to Nx UPs)

• Distributed edge compute

• High throughput / low latency

• ‘Best fit’ user plane selection

• Single I/F to OSS (e.g. RADIUS, PCRF, etc)

• New Use Cases

PFCP

BNG


BNG CUPS USE CASES: WIRELINE BNG

Centralized subscriber database enables

new use cases:

• Intelligent service placement

• BNG user plane redundancy

• BNG load balancing

• Centralized, network-wide IP address pool management

• Staged UP maintenance failover

INTERNET

Metro / CO POP

BNGUP

BNGUP

MS-BNG

L7 aware DPIURL filtering

IP/MPLS

BNG Control Plane SDB

Subscriber session DB

AAA / PCRF / DHCPBSS/OSS

BNG CUPS Controller

PPPDHCP

AAA Client

PCEFL2TPLAC

Applications

UP Load Balancing

Steering/Placement

IP Addr Mgt (Pool Bot)

UP High Avail / Maint Failover

Protocols / Control Plane SDB


SUBSCRIBER SERVICE CONVERGENCE: WIRELINE + WIRELESS

15

Fixed Wireless Access (FWA) Offload with the MXFirst Step Towards Fixed + Mobile Convergence (FMC)

4G Mobile Subs

4G Unlimited

5G Mobile BB

5G/4G FWA

Throughput# of Subs

50%

50%

3%

2%

5%

90%

• By 2020, 10% of mobile subs will drive 50% of data usage

• Profile similar to wireline BNG subs: up to 1 Gbps, always on

4G Mobile Subs

4G Unlimited

5G Mobile BB

5G/4G FWAASIC

x86

40%+ TCO Savingsw/ MX Offload3W / Gbps

Traditional vEPCOn COTS x8617W / Gbps

Solution: Offload power users

Converged Subscriber Core with the MXService Convergence of

Wireline BNG + Wireless 5G AGF/UPF

UPF

AGF

BNG

MX Router

• Convergence enables seamless migration from legacy to 5G

• Investing in CUPS

• MX: silicon-based user plane for speed, capacity

• Junos: cloud-native BNG control plane for operational parity

• Leverages advantages of MX

• Hierarchical QoS for FMC

• Network slicing for biz service

• Integrated security

• Open standards-based ecosystem for mobile core control plane


NETWORK EVOLUTION & CONVERGENCE

PCRF

PGW-CSGW-C

S11

SxA

Gx

SxB

S5c

S5u

AAA PCRF DHCP

N4

N3

MME

SGW-U

eNB

gNBgNB

N3

N2 N2 N11

N7

N10

N15

N8N12

N13AUSF UDM

AAA PCRF DHCP

PCRF

S11 Gx

S5

eNB

SMF

AGF-C

AMF

NSA

PCF

AGF-UV

V

V

S1-MME

S1-U

S1-MME

S1-U

N6

A10

A10BNG

UPF

MME

SGWSGi

PGW

SGiPGW-U

16

SCI

BNG-C

BNG-U


MULTI ACCESS USER PLANE FUNCTIONS & PLATFORMS

17

SxAB3GPP/BBF/IETF standardized Interfaces

Partner Subscriber Management & Signaling Functions

Authentication, Mobility Management, Policy, Subscriber Profiles, Accounting, Lawful Intercept, etc.

SCI N4 SCI*

MX960 MX480 MX240MX10003MX204

Container based control functions:

BNG-C & AGF-CBNG-C SAEGW-C

Control Plane Functions

SMF AGF-C

Dense User Plane:▪ MPC7: up to 480 Gbps (240Gbps anchor)▪ MPC10: up to 1.5 Tbps (500 Gbps anchor) (future)

Mobile Session Scaling▪ Up to 1M Session per MX (RE solution)▪ Up to 8M sessions with SPC3 (future)

BNG-UJuniper Multi-Access User Plane Functions

UPFSAEGW-U AGF-U

SCI = session control interface

Juniper Juniper


THANK YOU

18

Broadband Evolution and Fixed Mobile Convergence · 2019. 11. 13. · WT-459 - DISAGGREGATED BNG...

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Transcript of Broadband Evolution and Fixed Mobile Convergence · 2019. 11. 13. · WT-459 - DISAGGREGATED BNG...